Mobile OS Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Mobile OS Interview Questions

Questions Answers Views Company eMail

What’s the difference between an “app id” and a “bundle id” and what is each used for?

846

What is a category and when is it used?

852

What are “strong” and “weak” references? Why are they important and how can they be used to help control memory management and avoid memory leaks?

729

What are the limits of accessibility ?

812

Explain the characteristics of ios?

769

Explain place holder constraint

739

Explain differences between foundation and corefoundation

783

What is auto-layout?

874

What is the difference between let and var in swift?

861

What is the difference between atomic and non-atomic properties? Which is the default for synthesized properties? When would you use one over the other?

734

Explain the difference between copy and retain?

886

What is the difference between synchronous & asynchronous task ?

858

Why do you generally create a weak reference when using self in a block?

835

what’s accessibilityhint?

802

What is made up of nserror object?

819

Un-Answered Questions { Mobile OS }

Explain activity lifecycle briefly.

979

Suppose I get a “blog returned invalid data” error message. What do I do?

698

when to use 9 patch image in android?

890

What is view object in iOS operating system?

878

Where should we add permission to the applications?

828

What is the mobile application development all about?

946

What are different data storage options are available in android?

906

What are the storage facilities available on android?

821

What are the different versions of android os that you remember?

915

What is appdelegate?

785

How to check if browser supports web storage?

923

What is toast notification?

873

Explain the difference between oncreate() and onstart()?

918

What is sensormanager?

871

What are the services that can be allowed to run in a single process?

860

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